/Engine/Plugins/Experimental/Mutable/Source/MutableTools/Public/MuT/NodeColour.h
Possible subclasses.
enum EType { Constant = 0, Parameter = 1, SampleImage = 2, Table = 3, ImageSize = 4, FromScalars = 5, ArithmeticOperation = 6, Switch = 7, Variation = 8, None, }